HP67 Date of Easter

[HP67Child]

Hi,

The algorithm origitates from http://www.assa.org.au/edm.html#Computer

I've slightly changed the code so that you can read it more easily. E.g. I used "ENTER", "/" and "x<->y".
It works in the following way:
Write a year as a 4-digit number. Press A. The result is in the form M.DD (Month.Day) which is the Easter Sunday of the year.
Exemples:
2021
A
4.04
1967
A
3.26
2000
A
4.23
The year must be between 1583 and 4099. Otherwise the program gives -1.

HP67Child